Thanks, will try that. Also, the water is from a rodi system.1. Are you using tap water.
2. Run some carbon
3. Stop dosing ammonia, wait a few days for a fish, then don't dose anymore ammonia.
4. Another reason is a chemical may have gotten into your water, which is why I say run carbon. It should pull it out.
5. Buy Instant Ocean BioSpira for an instant cycle. You can add fish immediately after adding this product. If you want to restart.